Mathematics
KeraAlicer541
2016-04-18 06:29:57
Which expression has a simplified expression of 5x - 12? A. 3(4x - 4) - 7x B. -3(4x - 4) - 7x C. 3(-4x + 4) - 7x D. -3(-4x - 4) - 7x
ANSWERS
MichiS
2016-04-18 09:09:07

A. 3(4x - 4) - 7x = 12x - 12 - 7x = 5x - 12   yes B. -3(4x - 4) - 7x = -12x + 12 - 7x = -19x + 12 no C. 3(-4x + 4) - 7x = -12x + 12 - 7x  = -19x + 12 no D. -3(-4x - 4) - 7x = 12x + 12 - 7x = 5x + 12 no Answer is A.

nataliekellamq
2016-04-18 09:10:22

the answer is A. it can be simplified

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